Corrected entry: In the scene where Jean and Magneto are overlooking the camp of mutants, Magneto talks to Jean about her powers. He holds up the weapon with the antidote and says he can only control metal then levitates the weapon. The weapon was supposed to be made of plastic as revealed later in the movie. The alternate scene shows him levitating a metal mug instead which made sense with his line.
Phixius
17th Nov 2006
Correction: *That* particular weapon had metal in it. It was taken from one of the guards on the transport vehicle. Since Magneto was not one of their prisoners, they'd have no reason to carry metal free weapons.
Phixius ★